Dropping a Feather and a Coin in a Long Vacuum Chamber-Gravity Demonstration
Вставка
- Опубліковано 7 жов 2020
- In this video I show you what happens when you drop a feather and a coin in a vacuum chamber. Then I show you a what happens if you drop a golf ball and the moon on the earth at the same time from the same distance. I talk about inertia and how things always fall at the same acceleration no matter what their mass is.
Created with Universe Sandbox
universesandbox.com/
Get Your Experiment Box Here: theactionlab.com/
Checkout my experiment book: amzn.to/2Wf07x1
Follow me on Twitter: / theactionlabman
Facebook: / theactionlabofficial
Instagram: / therealactionlab
Watch other popular videos from my channel
Gömböc-The Shape That Shouldn't Exist
• Gömböc-The Shape That ...
Shooting a Nerf Gun Backwards While Driving At The Bullet's Speed Forward
• Shooting a Nerf Gun Ba...
Superhydrophobic Knife Slices Water Drops in Half
• Superhydrophobic Knife...
Real-Life Invisibility Cloak Can Hide Anything! How Does It Work?
• Real-Life Invisibility...
What's Inside the Worlds' Fastest Heat Conductor?
• What's Inside the Worl...
Can You Use Umbrellas Instead of a Parachute?
• Can You Use Umbrellas ...
Opening a Bottle of Liquid Nitrogen Under Water!
• Opening a Bottle of Li...
Warning: DO NOT TRY-Seeing How Close I Can Get To a Drop of Neutrons
• Warning: DO NOT TRY-Se...
*Any experiment you try is at YOUR OWN RISK. The Action Lab assumes no responsibility for any injury if you attempt anything you see in this video or on The Action Lab channel. - Наука та технологія
I knew the answer before watching this and i still watched it because his videos are so relaxing
I know.
Faczs
Same
If this is true, space debris are just feathers?
A simple way to think of this is dropping a single coin next to several of the same coin side by side; the earth ‘pulls’ on each of the coins equally, be they individual or joined side to side.
This man just extinguished all life on Earth to prove a point
Alonso Monroy Liquidano ok
The Action Lab is definitely one of the best science channels out there.
Yaa but there are many
@@HelloKittyFanMan. u watch him I know for sure u watch them
@@HelloKittyFanMan. but vsauce has a dark past
Agreed 💯%
@@HelloKittyFanMan. I like him whatever he did in past
My answer before I watched the video - I'd expect them to hit at around the same time, but I think the Moon would hit slightly before just due to how massive in size it is compared to the Golf Ball, the moon has to travel less distance to hit the Earth than the Golf Ball does, therefore, it will hit first.
But the rate at which they fall to the Earth will be the same, so if you made a second golf ball the same weight as the moon, they WOULD hit at the same time (You can do this in Universe Sandbox-2).
So Earth moves slightly towards the moon. It also moves towards the golfball. So when dropped separately, would the moon takes slightly less time to fall compared to the golfball?
Exactly what im thinking
yes
No need to overthink that much. The moon literally needs to travel thousands of kilometers less than the golfball if it was in its actual size. So ofc moon would hit first. If both are assumed to be of the same size, then you would either not call the moon as the moon or not call the golf ball as a golf ball.
@@harikrishnav.s.1299 If the surface to surface distance were measured to be the same for the Moon Earth and Moon Golfball, then the moon earth would impact each other sooner than Moon Golfball.
If the moon and golf ball were the same size but had the Mass of a moon and a golf ball, then the Earth and Moon (the size of a golfball) would impact each other sooner than the Earth and Golfball.
@@harikrishnav.s.1299 Thought experiment for you, if you're interested.
Let's droop two moons on two different earths. Both earths and moons in each example have the same mass, but in one example, the earth will not move (magic unicorn dust and fairy farts)
In each example, what would be the Kinetic energy of the impact relative to each other?, IE Same? or More? or less? for the moon earth system that was held still with Magic.
Would the gravitational force of the moon's mass factor in at all?
It would. Actionlab lied to you.
live with it, he often does that
Yes. ActionLab doesn't teach you anything.
Daniel Way The moon has about 1% of earths mass, so it would be around 1% faster, which i‘d still call remotely at the same time
Daniel Way don’t be rude he actually put much research and makes interesting topics with actual pracs so be grateful I doubt u could do any better if u can get 1 mil on YT then talk trash to him
Reading these comments, 🤣
Thank you so much for this video. I have watched many of these videos searching for a different explanation in order to understand. Yours is the only one that spoke about inertia. I have struggled to get my mind wrapped around this and now I can.
Would'nt the moon hit the earth earlier though? Because of it's own gravity pulling the earth?
Exactly
Yes it would and this fact makes this channel now sh¡t
corrrrrect.
No that's the misconception, the moon is massive so its own gravity attracts the earth, but this very mass slows down the acceleration and counteracts this fact and in the end it cancels out.
@@Hoera290 Yes, the moon and the ball would have the same speed towards the earths starting point, but the moon itself would pull the earth towards the moon. Therefor hit the earth earlier because the distance is shorter.
Hmmm The Moon has a significant mass of its own, so it should be pulling the Earth towards it. Which is why I would expect the Moon to hit the Earth first. (Unless the golf ball was underneath it.)
Yes you'r right, and actionlab has been teaching kids bullshit many many times.
Well it is an Universal Law of Gravitation rule that a higher mass body has a higher tendency to attract lower mass body. Because a higher mass body creates its own space and time. We on earth are not actually being pulled according to Theory of Relativity. We are actually in the space and time of the earth different from the space and time of the universe. That is why we feel that the Earth is pulling us. That is why Einstein proved Newton wrong about his thinking of gravitation.
If we see, everything in physics is inter-related to each other. We just have to understand the concepts.
@@idrisShiningTimes This is true. Today the gravitational force, is just another way to descibe how much a certain mass bends time and space.
Because the moon is orbiting the earth.
@@MalArgon then if the golf ball in the video was made as heavy as the Earth, with whom would the moon collide first??
Wouldn't the moon's own gravity have an effect
I thought the same
It’s barely anything compared to the Earth’s mass
It’s only 1.2% according to www.space.com. Such a small thing would barely have an effect so to simplify the demonstration I think it’s ok for him to not have included it in the video but yeah, you are right it would have an effect but so do the feather and the coin
1.2% is significant enough to produce a large difference over time
The moon's gravity would also move the earth closer to the moon.
O love these simple science experiments and all the explanation you give us.
Keep it up man!
Learning On Online School:Nope.
Learning On The Action Lab:Yes!
I love the way you explain theories!! And your experiments too
Here after watching Veritasium's "Gravity is not a force" video. This combined with action lab's video. i gained a deeper knowledge of gravity and my mind's blown just like that earth at the end of this video.
amazing, l loved the moon flashback, brings back lots of memories, and so amaizing
I think this is a much more complex question that you are making it. First, the moon has a radius of over 1000 miles. The equations of gravity are based on the location of the center of mass. So if you put the center of mass of the golf ball and the moon at the same distance so the acceleration is the same, the moon's surface is 1000 miles closer to earth and will hit first. If you instead put the surfaces at equal distances from the earth, now the center of mass of the moon is farther away and the acceleration is less at every point in time. Secondly, the earth will accelerate toward the moon a measurable amount (it also accelerates towards the golf ball but that acceleration is negligible). But also the golf ball will accelerate toward the moon. It would be interesting to do all the equations to see if the relative position of the golf ball and moon with respect to each other and the earth matter. Certainly there's a minimum distance where the golf ball would hit the moon before either reach earth.
Love how excited he gets!. Can you explain how a circulator pumps heat around in a hydronic heating system. I know it has to do with pressure differences and not actually pumping.
you have to specify it more clearly.
if the distance from the centre is the same AND we count it as reaching the earth when they touch then the moon has a huge advantage due to its diameter.
If we take the distance from the centre and time when the centre of the moon/golfball reach the surface of the earth - the moon would still win as it accelerates the earth towards it self.
Objects falling at the same speed is only approximately true for objects where one mass (say earth) is so much larger that the force of the others on it is negligible, or when the other 2 objects compared are rather similar in mass.
whats blue and not heavy?
light blue
I think I like the action lab. Because he actually do science other than just talked about it.
Great job👍
That Video was so amazing to watch i love it
If moon pulls Earth toward itself then it would reach Earth faster then a golfball.
Still evens out. All three objects pull on each other depending on the mass.
@@Qermaq no, it doesnt. Think about it. If you fail to understand i can explain further
@@jpanettiere I don't agree with you because moon is already falling in earth. As it revolve around the earth it's falling into earth.
Tõny Gamer this is true, however in the case under consideration neither the moon nor the golfball are orbiting the earth.
@@johnp893 to orbit the earth golf ball has to attain a very high speed.
Would love to see the simulation with the moon and ball each done separately with the earth
Exactly! I think the moon would hit the Earth earlier due to the mass of these two objects combined is much greater than the golf ball plus the Earth.
Did the sim in Universe simulator. Moon impacts Earth 4.3 HOURS earlier than golfball.
@@marvinkitfox3386 that's not what happens if you put the edge of the moon at the edge of the golf ball then drop them.
@@KD-jk6yo But then the moon is much further than the golfball, so what are you comparing?
Wow, this is really neat!
Really love your videos 👌❤
James and Derek from Veritasium both putting out gravity videos at the same time. I smell a collab coming soon.
That was really cool that they did that experiment on the moon!
he is parctical and so creative
Woah. You always make videos about things that I am currently learning about in school... ITS BEEN LIKE THIS FOR SO LONG WHAT IS HAPPENING
I always watch your vids dude even on Facebook 🔥🔥
Great full ideas
Cool project.
He is awesome man.
Really cool!
I forgot I subscribed to you!!! You are really cool though and I love your vids.
This is very helpfull to us while studying physics
Really you are awesome 😊
The "how about that!" Is so wholesome
Pretty slick
I have a question
The moon also has gravity so it should attract the golf ball towards it and hence the golf ball should move in a curve when the moon and it are close enough causing it to hit the earth not at the center where it was thrown but some what right to it
Lol I was just scrolling through UA-cam during online class and saw this video. My physics teacher is explaining the same thing.
NEWTON'S LAW OF GRAVITATION STATES THAT FORCE OF ATTRACTION BETWEEN TWO OBJECTS IS SAME WHICH IS DIRECTLY PROPORTIONAL TO PRODUCT OF THERE MASSES AND INVERSELY PROPORTIONAL TO SQUARE OF DISTANCE BETWEEN THEM
The gravitational acceleration (a) is the same, but since F=m*a, the force is depending on the mass.
@@Richard-bq3ni my bad..now check the statement
Nice!
I'm in science class rn and my teacher ain't here. This is teaching me more than my science class over the course of a month
(I know people comment this a lot)
Love action lab
What will happen if the pressure is greater than atmospheric pressure?
Will there be no motion if pressure if is very high?
Fabbi vid! Loved watching the drop on the moon. I think I could see the hammer speeding up due to m/s/s on the moon as it’s gravity is so much less than Earths. Or maybe I imagined it... either way, a lot of fun.
If it drop the same time. Is the force similar?
What software/app is that?
Software/app used for the animation?
That NASA footage was awesome!
Is it true that if an object moves faster than its falling speed it has maximum inertia?
Which means it will be harder to stop them from moving than if you try to stop them when they are moving slower than the falling speed
What vacuum pump do you use
I have a question if everything has a gravity, can we make something revolves around our bodies in space and small does this object need to be?
Also the inertia is a nice hypothesis, but the gravity is a tricky concept. If you imagine... or try to imagine, space-time, and then you imagine the deformation of space-time caused by massive objects, the deformation is kind of same for the light and heavy objects... So the mass of little objects is pretty much irrelevant unless they cause significant deformation of space-time themselves...
Cool!!!!!!!!!!!!!
Wouldn't the golf ball start moving at an angle towards somewhere between the moon and earth?
What software do you use for the simulation
What if you drop a feather and magnet together in a vacuum chamber? Will magnetic field speed up or slow down the fall of magnet slightly?
If you drop the magnet at the north pole, with south pole of the magnet pointing down, then theoretically it should fall a bit faster. And vice versa.
I'm disappointed that you didn't mention tidal forces, just to throw us nerds a nice curve ball. It's more interesting to visualize what would happen if the golf ball and moon are "dropped" at a distance of 1 meter, rather than a few thousand miles.
Perhaps a follow-up video? 8)
4:00~ Nooooooo!!!! My home country!!!!!
Good 👏👏👏👏👏👏
I don't think we'll know which one will drop first considering the earth will be destroyed by the moon
babaooey when
Hi
Thete is an easier explanation: Gravity is not a force, it is an aceleration, and both elements are accelerated with the same aceleration, so starting at the same speed and applying the same acceleration during the same time causes the same speed variation.
Please make a explanation detailed video on newton's third law and explain how earth which have much greater mass than moon but moon is also exerting equal and opposite amount of force on earth.......... how
Can you tell the name of the software you use?
It is a universe simulator game named Universe sandbox 2
I was honestly wandering about this only yesterday...how did youtube know?
What causes the inertia?
Isn't it simply a case of every atom in your object experiencing the same NET attraction to all the atoms around it (the 'net' vector being towards earth's center of mass/gravity)? Surely it doesn't matter than they're all joined together into a large object, nor does it matter how close together they are. They all want to head 'down' at the same rate. What makes them feel heavy is simply that our hand is resisting MORE atoms on a denser and/or larger item. I don't think inertial comes into it?
is it accelerating in vacuum?
The golf ball would land first, but we probably wouldn't notice, what with the moon coming at us. The increased surface area of the moon would create more friction in the atmosphere, slowing it down. If earth had no atmosphere, they would land at the same time.
P.S., Thanks for the inertia explanation. That was extraordinarily clear and concise.
How would a piece of paper dropped horizontally fall to the ground in a vacuum?
I would guess Moon, because golf ball will reach its terminal velocity in atmosphere and will be slowed down a lot. Also, Moon might actually pull Earth to itself, I am not sure if it has any effect on the time of the fall though. But the distance will be different, so it might.
EDIT: And Moon is also big so its surface will touch Earth much sooner than its center of mass would according to equations.
If it reaches atmosphere, then the experiment is already over, as it’s not in vacuum...,
Which software were you using
It is a space simulator game called Universe sandbox 2.
Are the dislikes from flat earthers?
How did you make the feather magnetic without making it heavier?
I hate when UA-cam notifies me about some of your vids in 2 minutes and others in 2 weeks.
I see a flaw... partially noted at 3:58 about the earth moving slightly... My issue is that you did the experiment simultaneously.. so the golf ball got the "benefit" of the moon moving the earth, and landed the same time.. I think that if you did the experiment separately and timed it, the moon would hit first (on its own) vs the golf ball being dropped with no moon to move the earth (appreciably) closer.. Now, if you dropped the moon on one side and the ball on the other, would the ball take even longer because the earth is moving away and towards the moon? or would they still hit the same time? Would the added gravity of the moon pulling the ball from the other side of the earth impart a greater acceleration to the ball, to a sufficiently greater degree so as to compensate for the earth moving slightly towards the moon and thus away from the ball? Not sure if I'm oversimplifying given that gravity decreases with distance, and the moon is 2x away form the ball, or if it all works out in the end.
I love you are the best 💞❤️
No, the moon hits the surface of the Earth first, and it's even annotated in the video why.
A simple thought experiment can demonstrate why. Reframe the question, what if you drop the golf ball and the Earth on the moon?
The universe is not a computer game, it doesn't decide on one frame of reference for gravitational attraction, both objects exert a force on the other. The hammer technically hits the moon before the feather, but it's by a immeasurably small difference, because the hammer will pull the moon towards it more than the feather pulls the moon towards it.
The purpose of the famous experiment is to highlight that gravity bodies pull things towards them by the same rate of acceleration. This is because the force they exert on another object is scaled by the mass of the object, but because acceleration is force/mass the mass is cancelled out so the acceleration is a constant for any body.
However for every force there is an equal a d opposite force, so that same force is applied on the gravitational body in the opposite direction. The Earth is 81 times the mass of the Moon, so that means that the rate of acceleration of the moon, relative to the Earth's surface is about 1.2% faster than the ball.
This is in a stationary frame of reference too, and the moon's actual acceleration will be faster too, as it will get closer to the Earth at a faster rate and consequently the gravitational pull it receives from the Earth (and consequently exerts on the Earth) will increase at a faster rate too.
@@stopmotioncubing4784 yes, I saw the Veritassium video later on and laughed at the time. But in the Newtonian model it is a force, and effectively acts as one from the frame of reference of people standing on the surface of the two bodies involved.
I thought the Moon would hit first because earth will also move toward to moon and because air resistance will not affect the moon that much whereas the ball will spend a lot of time in the atmosphere
What’s the science behind *Tether Cars*
Lovely !
Also an important lesson, if the Moon hits Earth someday at Pacific Ocean, at least Europe is safe... 😅😰
Huh
I'm pretty sure we'd all be screwed.
If by "safe" you mean "utterly fucked", then yes.
i was high asf and questioned gravity for lil bit ty for reminding me
WoW
Is there a falcon feather on the moon right now?
Epic
I thought theory of relativity states that its not a force pulling the object against its inertia, but the objects are stationary in space while the earth is curving the space time into gravity. That’s why both objects move in the same rate towards the earth
@2:20 you can clearly see the coin hit the bottom first.
We also have to consider size- the moon will hit first as it is WAAAAAAY bigger!
If the moon fell into the earth it would be a devastating planet-killing event. Would make a cool scifi movie
The moon hits first because its radius is much bigger than the golfball. The video shows this if you slow it down. If they were the same radius they'd hit at closer to the same time, but not perfectly because the golfball would have to curve towards the earth-moon barycenter in inertial space as it falls. What your simulating is actually the restricted three body problem in orbital mechanics.
I've actually always wondered this, because I fully understood that gravity was stronger with more mass, but was never taught the part about inertia balancing out the gravitational force.
My next question is this:
If the earth and the moon have different coefficients of gravity (on their surfaces), when they collide in the experiment, which coefficient is accurate at the point of impact? The answer is probably more simple than I think, but I struggle trying to find an answer.
That is, gravity on the moon's surface is measured at ~1.62 m/s², and gravity on Earth is ~9.81 m/s². But if they act on each other, then are they added together?
Does that mean that the 9.81 m/s² we're taught in school is only true if we ignore the force the other object has on pulling the earth closer to it? I get that the difference would be negligible between a coin and a feather, but the moon did in fact hit the earth before the golf ball did, implying that mass does have a measurable impact on the rate at which things gravitate towards the earth.
If the earth could be locked in place in space somehow (relative to the moon) so that the moon could not affect the earth by moving it with its gravity, I assume they would collide at the speed dictated by the earth's gravitational force alone. Similarly if the moon was somehow locked in place the collision would take much longer to happen, because of the larger inertia to overcome required to move the earth. Is that correct? Even though the force between the objects is the same, the relative speed varies drastically in the experiment due to inertia. Fascinating.
Gallileo sends his regards
but doesn't the moon have its own gravity, which means the earth and moon will pull each other will the golf ball is only being pulled by the earth (i know the earth has a weaker gravitational pull than the earth but its a stronger pull between them than between the earth and golf ball) well idk ??
this man sure does love destroying earth virtually
Finally I understand
please upload it at morning its almost 12:00 in india
Smart
shouldn't the golf ball fall toward the moon as well?
Lol I just studied about the vacuum experiment and then I saw this